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Media Release of April 12, 2022

BB Biotech AG concludes its share buyback program and launches a new buyback program

Yesterday, April 11, 2022, BB Biotech AG concluded the share buyback program it had initiated on April 12, 2019. During this period no registered shares were repurchased via a second trading line.

The Board of Directors passed a motion to launch a new share repurchase program immediately after the conclusion of this buyback program. Under the new share buyback program, BB Biotech AG is authorized to repurchase up to 10% of its shares (5 540 000 shares) over a period of 36 months. This decision marks a continuation of the payout policy introduced in 2013.

For further information:

Investor Relations

Bellevue Asset Management AG, Seestrasse 16, 8700 Küsnacht, Switzerland, tel. +41 44 267 67 00

Dr. Silvia Siegfried-Schanz, ssc@bellevue.ch

Maria-Grazia Iten-Alderuccio, mga@bellevue.ch

Claude Mikkelsen, cmi@bellevue.ch

Media Relations

Bellevue Asset Management AG, Seestrasse 16, 8700 Küsnacht, Switzerland, tel. +41 44 267 67 00

Tanja Chicherio, tch@bellevue.ch

www.bbbiotech.com

Company profile

BB Biotech AG is an investment company with its registered office in Schaffhausen/Switzerland and listed on the Swiss, German and Italian stock exchanges. It has invested in innovative drug developers headquartered primarily in the US and Western Europe. BB Biotech is one of the world"s largest investors in this sector. BB Biotech relies on the long-standing experience of its distinguished Board of Directors and the investment research skills of the experienced investment management team of Bellevue Asset Management AG when making its investment decisions.

Disclaimer

This release contains forward-looking statements and expectations as well as assessments, beliefs and assumptions. Such statements are based on the current expectations of BB Biotech, its directors and officers, and are, therefore, subject to risks and uncertainties that may change over time. As actual developments may significantly differ, BB Biotech and its directors and officers accept no responsibility in that regard. All forward-looking statements included in this release are made only as of the date of this release and BB Biotech and its directors and officers assume no obligation to update any forward-looking statements as a result of new information, future events or other factors.